An RTK measurement device

Abstract

This invention relates to the field of exploration and surveying equipment technology. The RTK surveying device includes a base station and a rover station. The base station is connected to the rover station via a wireless network. The base station includes a first fixed frame as a support, on which a base receiver body and a terminal host, interconnected by wiring, are mounted. The rover station includes an anchoring mechanism for inserting a detection point. A main support is provided on the anchoring mechanism, and a buffer shielding mechanism is provided on the main support. The buffer shielding mechanism includes a stepped platform fixed to the top of the main support. The invention's enclosed cover can be tensioned to form an elastic support, achieving vibration buffering when the anchoring mechanism is not inserted, effectively protecting core electronic components from vibration impact and extending the equipment's service life. When the anchoring mechanism is inserted, the buffer shielding mechanism can be locked, preventing shaking while simultaneously aligning the antenna with the anchor rod, improving measurement accuracy.

Description

Technical Field

[0001] This invention belongs to the field of exploration and surveying equipment technology, and specifically relates to an RTK surveying device. Background Technology

[0002] RTK measurement technology is a high-precision positioning technology based on GNSS. It eliminates signal errors through differential data transmission between the base station and the rover, achieving centimeter-level positioning. It is widely used in surveying and exploration, engineering construction, topographic surveying, geographic information collection and other fields.

[0003] Existing RTK mobile stations typically employ an integrated receiver structure, with the alignment of the antenna and anchoring structure relying on manual adjustment, which is prone to axis misalignment due to operational errors. Simultaneously, vibrations generated during mobile station relocation can cause internal component misalignment, and adding a buffer structure can affect measurement accuracy during the measurement process. These factors collectively affect the final positioning effect; therefore, it is necessary to design an RTK measurement device. Summary of the Invention

[0004] The purpose of this invention is to provide an RTK measurement device with a simple structure and reasonable design in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: An RTK measurement device includes a base station and a rover station. The base station is connected to the rover station via a wireless network. The base station includes a first fixed frame as a support, on which a reference receiver body and a terminal host interconnected by wiring are mounted. The rover station includes an anchoring mechanism for inserting detection points. A main support is mounted on the anchoring mechanism, and a buffer shielding mechanism is mounted on the main support. The buffer shielding mechanism includes a stepped platform fixed to the top of the main support. A movable frame is slidably connected between the stepped platform and the main support, sliding on the inner wall of an upper housing. The upper housing and the main support are connected by a tensioning mechanism. A closed cover is threaded to the top of the upper housing. A GNSS antenna is mounted on the closed cover and connected to the rover receiver body. The rover receiver body and the base receiver body achieve differential data transmission via an RTK network. The rover receiver body is fixed to an upper support, which abuts against the closed cover. An alignment mechanism is provided on the main support to align the axis of the GNSS antenna with the axis of the anchoring mechanism.

[0006] As a further optimization of the present invention, the tensioning mechanism includes a side support uniformly fixed on the side wall of the upper shell, the side support being fixed on the upper ring body, a lower ring body being fixed on the main bracket, and multiple tension ropes being tensioned between the lower ring body and the upper ring body.

[0007] As a further optimization of the present invention, a sealing pad is provided on the upper support, the sealing pad abuts against the sealing gasket, and the sealing gasket is fixed on the stepped platform.

[0008] As a further optimization of the present invention, a backup unit is provided on the upper support. The backup unit includes a circuit board fixed on the upper support. The circuit board is connected to the mobile receiver body, and a storage module and a built-in power supply located in the main bracket are provided on the circuit board.

[0009] As a further optimization of the present invention, the anchoring mechanism includes an anchor rod rotatably connected to the bottom of the main support, the bottom of the anchor rod being fixed with a pointed tip for easy insertion into the soil, and an anti-slip sleeve being fixed on the outer wall of the main support.

[0010] As a further optimization of the present invention, the centering mechanism includes a connecting frame fixed to the bottom of the upper support, a limiting block is provided at the bottom of the connecting frame, and a centering slot is provided at the bottom of the limiting block.

[0011] As a further optimization of the present invention, the anchor rod is slidably connected to a lower support column, the contact surface between the lower support column and the inner wall of the anchor rod is a friction surface, and anti-slip hooks are uniformly arranged on the side wall of the lower support column and slidably connected to the groove of the side wall of the anchor rod.

[0012] As a further optimization of the present invention, a connecting rod is fixedly disposed in the main support at the top of the lower support column, and a centering block corresponding to the shape and size of the centering slot is fixed at the top of the connecting rod.

[0013] As a further optimization of the present invention, the terminal host is connected to the reference antenna via a wire, and the reference antenna is fixed on the second mounting bracket.

[0014] The beneficial effects of this invention are as follows: 1. When the sealed cover of the present invention is threaded to the top of the upper housing, the sealing pad at its bottom will gradually abut against the sealing gasket of the stepped platform. As the tightening operation continues, the elastic abutment between the sealing pad and the sealing gasket will generate axial pressure, pushing the sealed cover and the upper housing to move away from the main support. This will simultaneously tension the pull rope connecting the upper housing and the main support in the tensioning mechanism, forming an elastic tensioning support structure. When the anchoring mechanism is not inserted into the detection point and the mobile station is idle or in a transfer state, if it encounters slight collisions, ground disturbances, or other vibrations, the pull rope, together with the mutually abutting sealing pad and sealing gasket, will absorb the vibration energy. At the same time, it will allow the movable frame to slide in the annular groove between the stepped platform and the main support, achieving dual vibration buffering in both axial and radial directions. This will prevent vibration from being directly transmitted to the mobile receiver body and GNSS antenna, effectively protecting the core electronic components from vibration impact and extending the service life of the equipment.

[0015] 2. During the insertion of the anchor rod into the detection point, the soil exerts an upward impact force on the anti-slip hooks on the sidewall of the anchor rod. This impact force is greater than the friction force between the lower support column and the inner wall of the anchor rod, pushing the lower support column to slide upward along the inner wall of the anchor rod, causing the connecting rod and the top centering block to rise synchronously. When the anchor rod is fully inserted into the detection point and firmly fixed, the centering block and the centering slot of the bottom limiting block of the connecting frame completely abut against each other. With the guiding effect of the inclined platform of the centering slot, the sliding freedom of the movable frame of the buffer shielding mechanism and the upper shell is precisely constrained, thereby locking the buffer shielding mechanism. At the same time, the abutment between the centering block and the centering slot forces the axis of the GNSS antenna fixed on the enclosed cover to completely overlap with the axis of the anchor rod of the anchoring mechanism, eliminating the centering error from the mechanical structure level, providing accurate reference conditions for RTK measurement, and significantly improving the measurement accuracy of the detection point.

[0016] 3. The enclosure of this invention is made of a metal material that can shield electromagnetic signals. It works in conjunction with the main support, upper shell, and movable frame, which are also made of metal. After the enclosure is tightened and the sealing pad and sealing gasket are in close contact, a complete closed metal shielding cavity is formed. This cavity can effectively block electromagnetic interference signals from the external environment from entering the working area of ​​the mobile receiver through the electromagnetic shielding effect of the metal shell, reducing the impact of electromagnetic interference on satellite signal reception and data processing, and ensuring the accuracy of measurement results. When equipment maintenance or repair is required, the enclosure can be directly disassembled by simply unscrewing the threaded connection between the enclosure and the upper shell, and the mobile receiver and backup unit fixed on the upper support can be taken out without disassembling the overall buffer shielding structure. The operation is simple and convenient, greatly improving the efficiency of later equipment maintenance and repair. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the mobile station in this invention; Figure 3 This is a schematic diagram of the centering mechanism in this invention; Figure 4 yes Figure 3 A magnified view of a portion of region A in the middle; Figure 5 This is a schematic diagram of the buffer shielding mechanism in this invention; Figure 6 This is a schematic diagram of the installation position of the upper support in this invention; Figure 7 This is an assembly diagram of the buffer shielding mechanism in this invention; Figure 8 This is a schematic diagram of the tensioning mechanism in this invention.

[0018] In the diagram: 1. Base station; 2. Rover station; 11. First mounting frame; 12. Base receiver body; 13. Terminal host; 14. Base antenna; 15. Second mounting frame; 20. Centering mechanism; 21. Anchoring mechanism; 22. Main support; 23. Buffer shielding mechanism; 24. Tensioning mechanism; 25. Enclosure; 26. GNSS antenna; 27. Rover receiver body; 28. Upper support; 31. Backup unit; 32. Built-in power supply; 201, connecting frame; 202, limiting block; 203, centering slot; 204, lower support column; 205, centering block; 206, anti-slip hook; 207, connecting rod; 211, anchor rod; 212, anti-slip sleeve; 231, stepped platform; 232, movable frame; 233, upper shell; 234, sealing pad; 235, sealing gasket; 241, side support; 242, upper ring body; 243, lower ring body; 244, pull rope. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example: Please refer to Figures 1-8An RTK measurement device includes a base station 1 and a rover station 2. The base station 1 is connected to the rover station 2 via a wireless network. The base station 1 includes a first fixed frame 11 as a support. A reference receiver body 12 and a terminal host 13, which are interconnected by wiring, are mounted on the first fixed frame 11. The terminal host 13 is connected to a reference antenna 14 via a wire. The reference antenna 14 is fixed on a second fixed frame 15, thereby keeping the position of the reference antenna 14 relatively independent and away from the electromagnetic interference generated by the terminal host 13. In addition, the height and orientation of the reference antenna 14 can be flexibly adjusted with the second fixed frame 15 to ensure the openness of satellite signal reception and reduce obstruction and multipath error. As the core component for satellite signal reception of the base station 1, the reference antenna 14 can capture multiple satellite signals and transmit them to the reference receiver body 12. The rover station 2 includes an anchoring mechanism 21 for inserting detection points. A main support 22 is provided on the anchoring mechanism 21. A buffer shielding mechanism 23 is provided on the main support 22. A GNSS interconnected by wiring is provided on the buffer shielding mechanism 23. The GNSS antenna 26 and the mobile receiver 27, along with the buffer shielding mechanism 23, have dual functions of buffering and shock absorption as well as electromagnetic shielding. They provide a protective carrier for the mobile receiver 27, absorbing vibrations in the measurement environment to prevent internal component displacement or signal abnormalities. They also shield against external electromagnetic interference, protecting the circuitry of the mobile receiver 27 and reducing the impact of interference on positioning accuracy. The mobile receiver 27 and the reference receiver 12 achieve differential data transmission via an RTK network. During operation, the reference receiver 12 continuously receives satellite signals and collects raw observation data. The terminal host 13 performs data preprocessing, differential correction generation, and transmission control functions. The two are interconnected via wiring to achieve real-time data interaction. Simultaneously, the GNSS antenna 26 captures satellite signals and transmits them to the mobile receiver 27 via wires. After receiving the differential data from the reference station 1, the mobile receiver 27 performs real-time RTK differential calculation to determine the three-dimensional coordinates of the detection point.

[0021] Before conducting RTK measurements, the base station 1 is first set up: the first fixed frame 11 and the second fixed frame 15 are placed at fixed reference points with open and unobstructed views, ensuring that the two frames are stable and do not shake. The reference receiver body 12 and the terminal host 13 are installed on the first fixed frame 11, and their circuit and data interconnection is completed through wiring. The reference antenna 14 is fixed on the second fixed frame 15, and the height and orientation of the second fixed frame 15 are adjusted to keep the reference antenna 14 away from the terminal host 13 and surrounding electromagnetic interference sources, ensuring that the antenna receiving surface is unobstructed. Then, the reference antenna 14 is connected to the terminal host 13 with wires, completing the hardware setup and debugging of the base station 1. During measurement, the anchoring mechanism 21 is vertically inserted into the test point to be measured, ensuring that the anchoring is firm and not loose. The buffer shielding mechanism 23 is installed on the main support 22 at the top of the anchoring mechanism 21, and the GNSS antenna 26 and the mobile receiver body 27 are interconnected through wires and integrated into the buffer shielding mechanism 23. Within 3 hours, the GNSS antenna 26 is adjusted to face the sky to ensure signal reception coverage, completing the deployment of mobile station 2. The reference antenna 14 continuously acquires satellite signals and transmits them to the reference receiver 12. The reference receiver 12 performs preliminary analysis on the received satellite signals, collects raw observation data such as pseudorange and carrier phase, and transmits the data to the terminal host 13 in real time via wiring. After receiving the raw observation data transmitted by the reference receiver 12, the terminal host 13 processes and transmits the data. During the transmission process, the terminal host 13 transmits the data to the mobile receiver 27 of mobile station 2 through the established RTK network. The GNSS antenna 26 of mobile station 2 continuously acquires satellite signals and transmits the raw signals to the mobile receiver 27 via wires. The mobile receiver 27 simultaneously receives the raw satellite observation data transmitted by the GNSS antenna 26 and the data transmitted by the reference station 1, and analyzes and calculates the position coordinates of mobile station 2.

[0022] Please see Figures 2-3 , Figure 5 and Figures 7-8The buffer shielding mechanism 23 includes a stepped platform 231 bolted to the top of the main support 22. The main support 22 is made of a metal material that can shield electromagnetic signals. After the stepped platform 231 is fixed, it forms an annular groove with the main support 22. A movable frame 232 is slidably connected in the annular groove. The movable frame 232 is also made of a metal material that can shield electromagnetic signals. Rubber washers are fixed in the annular grooves at the top and bottom of the movable frame 232. When the movable frame 232 is slidably connected in the annular groove, the rubber washers at its top and bottom are tightly attached to the stepped platform 231 and the main support 22, respectively. The inner diameter of the movable frame 232 is larger than the outer diameter of the annular groove between the stepped platform 231 and the main support 22. After installation, the movable frame 232 is allowed to move in the annular groove. The movable frame 232 slides on the inner wall of the upper housing 233, and the upper housing 233 and the main support 22 are connected by a tensioning mechanism 24. After connection, the upper housing 233 can shake accordingly when subjected to vibration, thus buffering the vibration impact. At the same time, during the shaking process, the movable frame 232 slides between the main support 22 and the stepped platform 231. The top of the upper housing 233 is threaded with a closed cover 25, which is made of a metal material that can shield electromagnetic signals. The GNSS antenna 26 is fixed on the closed cover 25, and the mobile receiver body 27 is fixed on the upper support 28, which abuts against the inside of the closed cover 25. The main support 22 is provided with a mechanism to connect the axis of the GNSS antenna 26 with the axis of the anchoring mechanism 21. When the centering mechanism 20 and anchoring mechanism 21 are inserted into the detection point, the centering mechanism 20 can lock the tensioning mechanism 24 to prevent the upper housing 233 from shaking, while ensuring that the axis of the GNSS antenna 26 overlaps with the axis of the anchoring mechanism 21, thus improving measurement accuracy. A sealing pad 234 made of elastic material is fixed to the bottom of the upper support 28. The sealing pad 234 abuts against the sealing gasket 235, which is fixed to the stepped platform 231. During the threaded connection of the sealing cover 25 to the upper housing 233, the sealing pad 234 abuts against the sealing gasket 235, thus sealing the internal space of the sealing cover 25, the upper housing 233, and the main support 22. After sealing, the sealing cover 25, the upper housing 233, and the main support 22 cooperate flexibly. The moving frame 232 together form a closed shielding structure, which effectively reduces the impact of electromagnetic interference on the measurement results. A backup unit 31 is fixed on the upper support 28. The backup unit 31 includes a circuit board fixed on the upper support 28. The circuit board is connected to the mobile receiver body 27. The circuit board is equipped with a storage module and a built-in power supply 32 located in the main support 22. The storage module can cache the original observation data and positioning results offline, realize breakpoint continuation, and avoid data loss caused by sudden situations such as weak network and power failure. The built-in power supply 32 provides power to the backup unit 31 and the mobile receiver body 27. The backup unit 31 can form data redundancy, improve the anti-interference ability and working continuity of the equipment in complex environments, and ensure the smooth completion of the measurement task.

[0023] Please see Figures 2-5 and Figures 7-8 The tensioning mechanism 24 includes side supports 241 uniformly fixed on the side wall of the upper housing 233. The side supports 241 are fixed on the upper ring 242. The inner diameter of the upper ring 242 is larger than the outer diameter of the main support 22, and the main support 22 is sleeved in the upper ring 242, allowing the upper ring 242 to generate a certain radial sway on the main support 22. A lower ring 243 is fixed on the outer wall of the main support 22. Multiple tension ropes 244 are tensioned between the lower ring 243 and the upper ring 242. During the process of the sealed cover 25 being threaded onto the upper housing 233, as the sealing pad 234 contacts the sealing gasket 235, the resulting pressure will cause the entire sealed cover 25 and the sealing gasket 235 to... The upper housing 233 moves away from the main support 22, thereby simultaneously tensioning the multiple pull ropes 244 through the sealing pad 234 and the sealing gasket 235. After tensioning, due to the elastic contact between the sealing pad 234 and the sealing gasket 235, the entire enclosure 25, the upper housing 233, the mobile receiver body 27, and the GNSS antenna 26 can generate corresponding shaking when vibrating. During the transfer of the mobile station 2, the shaking effectively alleviates the impact and avoids structural damage or component displacement. At the same time, the threaded connection between the enclosure 25 and the upper housing 233 can be released to remove the mobile receiver body 27 from the enclosure 25, which is convenient for later maintenance and repair.

[0024] Please see Figures 1-4 and Figures 6-7The anchoring mechanism 21 includes an anchor rod 211 rotatably connected to the bottom of the main support 22. The bottom of the anchor rod 211 is fixed with a pointed tip for easy insertion into the soil. A rubber anti-slip sleeve 212 is fixed to the outer wall of the main support 22. The centering mechanism 20 includes a connecting frame 201 fixed to the bottom of the upper support 28. A limiting block 202 is provided at the bottom of the connecting frame 201. The bottom of the limiting block 202 has a centering slot 203 in the shape of a ramp. A lower support column 204 is slidably connected to the anchor rod 211. The lower support column 204 and the anchor rod 211 are connected... The contact surface of the inner wall of anchor rod 211 is a friction surface. Anti-slip hooks 206 are evenly arranged on the side wall of the lower support 204. The anti-slip hooks 206 are slidably connected in the elongated slots opened in the side wall of anchor rod 211. A connecting rod 207 is fixed to the top of the lower support 204. The connecting rod 207 is set in the main support 22. A centering block 205 corresponding to the shape and size of the centering slot 203 is fixed to the top of the connecting rod 207. When the mobile station 2 is not fixed, the lower support 204 is located at the lower part of anchor rod 211 and is kept in place by the friction surface. When the centering block 205 is in the correct position, it disengages from the centering slot 203. The buffer shielding mechanism 23 has the effect of buffering vibration. When the mobile station 2 is fixed, the anchor rod 211 is inserted into the detection point. During the insertion process, the anti-slip hook 206 is impacted by the soil, which causes the entire lower support 204 to move upward against friction until the centering block 205 and the centering slot 203 are completely in contact. After contact, the axis of the GNSS antenna 26 overlaps with the axis of the anchor rod 211. Moreover, as the anti-slip hook 206 and the anchor rod 211 continue to be inserted, the mobile station 2 moves upward. Station 2 is stably inserted into the detection point. At the same time, due to the limiting effect of the centering block 205 on the centering slot 203, the shaking of the buffer shielding mechanism 23 can be locked, preventing the shaking of the buffer shielding mechanism 23 from causing measurement deviation during measurement. After the measurement is completed, the anchor rod 211 can be pulled out to move station 2. During the pulling process, the contact friction between the anti-slip hook 206 and the soil is greater than the friction between the friction surface and the anchor rod 211, causing the centering block 205 to disengage from the centering slot 203. After pulling out, the locking effect on the buffer shielding mechanism 23 is released.

[0025] It should be noted that when using this RTK measurement device, the first step is to set up and debug the base station 1. Select a fixed reference point with a wide field of view, no obstruction, and far away from electromagnetic interference sources. Fix the first fixed frame 11 and the second fixed frame 15 respectively to ensure that the two frames are stable and do not shake. Install the reference receiver body 12 and the terminal host 13 on the first fixed frame 11. Complete the circuit and data interconnection between the two through dedicated wiring. Fix the reference antenna 14 on the second fixed frame 15. Adjust the height and orientation of the second fixed frame 15 so that the receiving surface of the reference antenna 14 is unobstructed. Then connect the reference antenna 14 and the terminal host 13 with wires to complete the hardware construction and power-on debugging of the base station 1 and ensure that the equipment starts normally. Next, the mobile station 2 is arranged. The stepped platform 231 is fixed to the top of the main support 22 with bolts. At the same time, the movable frame 232 with embedded rubber gaskets is slidably inserted into the annular groove formed by the stepped platform 231 and the main support 22, ensuring that the rubber gaskets are tightly attached to the stepped platform 231 and the main support 22. The upper shell 233 is fitted onto the outside of the movable frame 232. The upper shell 233 is connected to the main support 22 by the tensioning mechanism 24, which consists of the side support 241, the upper ring 242, the lower ring 243, and the pull rope 244. The mobile receiver body 27 and the backup unit 31 are fixed on the upper support 28. Support 28 is slidably embedded into enclosed cover 25, ensuring that the sealing pad 234 at the bottom of upper support 28 faces outward, GNSS antenna 26 is fixed to the top of enclosed cover 25, and interconnection between GNSS antenna 26 and mobile receiver body 27 is completed through wires. Then, enclosed cover 25 is threaded to the top of upper housing 233. During the tightening of enclosed cover 25, sealing pad 234 gradually abuts against sealing pad 235 of stepped platform 231. The resulting pressure causes upper housing 233 and enclosed cover 25 to move away from main support 22, and multiple pull ropes 244 are tensioned simultaneously to complete the assembly of mobile station 2. Holding the rubber anti-slip sleeve 212 on the outer wall of the main support 22, align the pointed end of the anchor rod 211 with the point to be measured and insert it vertically downwards into the soil, ensuring that the anchoring direction is perpendicular to the ground. During insertion, the soil exerts an upward impact force on the anti-slip hook 206, causing the lower support column 204 to overcome the friction with the inner wall of the anchor rod 211 and slide upwards, driving the connecting rod 207 and the top centering block 205 to rise synchronously. Continue inserting the anchor rod 211 until it is stable. At this time, the centering block 205 and the centering groove 203 of the bottom limiting block 202 of the connecting frame 201 are fully abutted, using the inclined platform shape The slotted guide ensures that the axis of the GNSS antenna 26 precisely overlaps with the axis of the anchor rod 211. The abutment between the centering block 205 and the centering slot 203 achieves mechanical limitation, locking the swaying degree of freedom of the tensioning mechanism 24, and keeping the upper shell 233, the enclosure 25 and the internal core components in a fixed posture to avoid structural displacement during measurement. At this time, the enclosure 25, the upper shell 233, the movable frame 232 and the main support 22 together form a closed metal shielding cavity, which, together with the sealing structure, completes the sealing of the internal space. Then, the RTK measurement process can be completed by the cooperation of the base station 1 and the rover 2. After a single detection point measurement is completed, the anchor rod 211 is pulled upward by holding the rubber anti-slip sleeve 212. During the pulling process, the friction force of the soil on the anti-slip hook 206 is greater than the friction force between the lower support 204 and the inner wall of the anchor rod 211, causing the lower support 204 to slide downward and reset. The centering block 205 disengages from the centering slot 203, releasing the lock on the tensioning mechanism 24. During the transfer of the mobile station 2, the tensioning mechanism 24 regains its swaying freedom. When the mobile station 2 is subjected to vibration or impact during the transfer, the mutually abutting closed pad 234 and sealing pad 235 can absorb axial and radial vibration energy through elastic deformation. During the process, the movable frame 232 slides along the annular groove. At the same time, under the restriction of multiple pull ropes 244, the movement range of the closed cover 25 is prevented from being too large, which would cause the movable frame 232 to collide with the side wall of the main support 22. This effectively prevents vibration from being transmitted to the mobile receiver body 27 and GNSS antenna 26, ensuring the stability of the component position during the measurement process.

[0026] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An RTK measuring device comprising a reference station (1) and a mobile station (2), characterized in that: The base station (1) is connected to the mobile station (2) via a wireless network. The base station (1) includes a first fixed frame (11) as a support. A reference receiver body (12) and a terminal host (13) interconnected by wiring are installed on the first fixed frame (11). The mobile station (2) includes an anchoring mechanism (21) for inserting detection points. A main support (22) is provided on the anchoring mechanism (21). A buffer shielding mechanism (23) is provided on the main support (22). The buffer shielding mechanism (23) includes a stepped platform (231) fixed to the top of the main support (22). A movable frame (232) is slidably connected between the stepped platform (231) and the main support (22). The movable frame (232) slides on the upper shell. On the inner wall of (233), the upper shell (233) and the main support (22) are connected by a tensioning mechanism (24). The top of the upper shell (233) is threaded with a closed cover (25). A GNSS antenna (26) is installed on the closed cover (25). The GNSS antenna (26) is connected to the mobile receiver body (27). The mobile receiver body (27) and the reference receiver body (12) realize differential data transmission through the RTK network. The mobile receiver body (27) is fixed on the upper support (28). The upper support (28) abuts against the closed cover (25). The main support (22) is provided with a centering mechanism (20) that overlaps the axis of the GNSS antenna (26) with the axis of the anchoring mechanism (21).

2. The RTK measurement device of claim 1, wherein: The tensioning mechanism (24) includes a side support (241) evenly fixed on the side wall of the upper shell (233), the side support (241) is fixed on the upper ring (242), the lower ring (243) is fixed on the main bracket (22), and multiple pull ropes (244) are tensioned between the lower ring (243) and the upper ring (242).

3. The RTK measurement device of claim 1, wherein: The upper support (28) is provided with a sealing pad (234), which abuts against the sealing gasket (235), and the sealing gasket (235) is fixed on the stepped platform (231).

4. The RTK measurement device of claim 1, wherein: A backup unit (31) is provided on the upper support (28). The backup unit (31) includes a circuit board fixed on the upper support (28). The circuit board is connected to the mobile receiver body (27), and a storage module and a built-in power supply (32) are provided on the circuit board located in the main bracket (22).

5. The RTK measurement device of claim 1, wherein: The anchoring mechanism (21) includes an anchor rod (211) rotatably connected to the bottom of the main support (22). The bottom of the anchor rod (211) is fixed with a pointed tip that is easy to insert into the soil. An anti-slip sleeve (212) is fixed on the outer wall of the main support (22).

6. The RTK measuring device according to claim 5, characterized in that: The centering mechanism (20) includes a connecting frame (201) fixed to the bottom of the upper support (28), a limiting block (202) is provided at the bottom of the connecting frame (201), and a centering slot (203) is opened at the bottom of the limiting block (202).

7. An RTK measurement device according to claim 6, characterized in that: The anchor rod (211) is slidably connected to a lower support column (204). The contact surface between the lower support column (204) and the inner wall of the anchor rod (211) is a friction surface. Anti-slip hooks (206) are evenly arranged on the side wall of the lower support column (204) and slidably connected to the groove of the side wall of the anchor rod (211).

8. An RTK measuring device according to claim 7, characterized in that: The top of the lower support column (204) is fixed with a connecting rod (207) set in the main support (22), and the top of the connecting rod (207) is fixed with a centering block (205) corresponding to the shape and size of the centering slot (203).

9. An RTK measuring device according to claim 1, characterized in that: The terminal host (13) is connected to the reference antenna (14) via a wire, and the reference antenna (14) is fixed on the second mounting bracket (15).

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